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CompletedNCT06139588RTADMUpdated Dec 13, 2023

Comparative Analysis of Two Animal-derived ADMs in Irradiated Implant-based Reconstruction

An observational study in Breast Implant; Complications, Breast Implant Infection and Implant Capsular Contracture, sponsored by European Institute of Oncology. Completed at 1 site in Italy. Open to female participants. Per ClinicalTrials.gov, last updated 2023-12-13.

Sponsored by European Institute of Oncology · Observational

Study type
Observational
Model
Case-control
Time perspective
Retrospective
Enrollment
146
Sex
Female
01

Study summary

The goal of this retrospective observational trial is to compare two different devices, used in implant-based breast reconstruction, called acellular dermal matrices, which are a sort of collagen patch that integrates with the tissues of the patient and helps in contrasting the collateral effects of radiotherapy (capsular contracture, implant loss)

The main questions the study aims to answer are:

  • is one of the two matrices better than the other? (better results with fewer complications)
  • is there a group of patients who benefit more than another from the use of this type of devices?
  • is there an adm which works better in one specific subgroup of patients? Participants have undergone mastectomy, radiotherapy and implant reconstruction with the aid of two different kinds of acellular dermal matrices.

Researchers will compare patients who receive the porcine-derived adm and the patients who receive bovine-derived adm to see if there is a difference in terms of capsular contracture reduction, aestethic result and complications.

Read the detailed description

Radiotherapy is highly effective in breast cancer treatment, yet it impairs satisfactory implant-based reconstruction, due to high rates of capsular contracture and implant loss. This said, a fervent investigtion exists upon solutions that can make implant-based reconstruction safer and aesthetically satisfying, including the use of acellular dermal matrices. We retrospectively want to analyze our ADM-assisted post-RT implant-based breast reconstructions comparing two different matrices (porcine and bovine), when autologous reconstruction was contraindicated, to assess eventual differences in efficacy and risk profile of the devices. We want to further stratify the population in 4 groups based on clinical presentation to assess if there was a group where ADMs proves to perform better (Group A - previous quadrantectomy, Group B - previous mastectomy and expander reconstruction, Group C - previous mastectomy and implant reconstruction, Group D - prior quadrantectomy followed by mastectomy and implant reconstruction).

02

Conditions studied

  • Breast Implant; Complications
  • Breast Implant Infection
  • Implant Capsular Contracture
  • Breast Seroma
  • Breast Implant Protrusion
  • Breast Cancer

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Keywords

  • implant-based
  • breast reconstruction
  • adm
  • radiation therapy
  • irradiated breast
03

In context

Breast Neoplasms

12,815 studies on the registry are indexed under Breast Neoplasms; 2,920 are open to participants now.

This study's enrollment of 146 is below the median of 184 across 2,711 observational studies indexed under Breast Neoplasms.

Browse Breast Neoplasms studies →

Lead sponsor

European Institute of Oncology is the lead sponsor of 184 studies on the registry; 117 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The study focuses on female patients undergoing implant based reconstruction after radiotherapy assisted by the use of an acellular dermal matrix.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • at least 6 months follow up
  • breast reconstruction with implant + acellular dermal matrix after mastectomy and radiotherapy

Exclusion criteria

Exclusion Criteria:

  • mastectomy flap \<1 cm
  • autoimmune disease
  • prolonged use of corticosteroids
05

Study design

Observational model
Case-control
Time perspective
Retrospective
Enrollment
146 participants (actual)
Patient registry
No

Groups and cohorts

  • POST QUART NATIVE

    Native adm used in the setting of mastectomy and implant reconstruction after QUART

    Device: acellular dermal matrix implant for breast reconstruction

  • POST QUART VERITAS

    Veritas adm used in the setting of mastectomy and implant reconstruction after QUART

    Device: acellular dermal matrix implant for breast reconstruction

  • POST EXPANDER NATIVE

    Native adm used in the setting of expander removal and implant positioning after mastectomy + RT

    Device: acellular dermal matrix implant for breast reconstruction

  • POST EXPANDER VERITAS

    Veritas adm used in the setting of expander removal and implant positioning after mastectomy + RT

    Device: acellular dermal matrix implant for breast reconstruction

  • IMPLANT EXCHANGE NATIVE

    Native adm used in the setting of implant exchange after mastectomy + RT

    Device: acellular dermal matrix implant for breast reconstruction

  • IMPLANT EXCHANGE VERITAS

    Veritas adm used in the setting of implant exchange after mastectomy + RT

    Device: acellular dermal matrix implant for breast reconstruction

  • IMPANT EXCHANGE AFTER QUART NATIVE

    Native adm used in the setting of implant exchange after QUART+ Mastectomy and implant reconstruction

    Device: acellular dermal matrix implant for breast reconstruction

  • IMPLANT EXCHANGE AFTER QUART VERITAS

    Veritas adm used in the setting of implant exchange after QUART+ Mastectomy and implant reconstruction

    Device: acellular dermal matrix implant for breast reconstruction

Interventions

  • Deviceacellular dermal matrix implant for breast reconstruction

    acellular dermal matrix implant in implant-based breast reconstruction in patients receiving radiotherapy

06

What researchers measure

Primary outcomes

  1. ADM efficacy and risk profile comparison

    Does one dermal matrix perform better than the other in terms of efficacy and complication rates?

    Time frame: 60 months

Secondary outcomes

  1. Best clinical setting for ADM use

    Is there a subgroup of patient where the use of ADM proves more beneficial than others?

    Time frame: 60 months

Other outcomes

  1. ADM comparison in each clinical setting group

    Is there a type of dermal matrix that performs better than the other in a specific subgroup of patients?

    Time frame: 60 months

07

Study locations

1 site
  • European Institute of Oncology
    Milan, Lombardy 20141, Italy
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jun 2017 to primary completion in Dec 2022, 66 months.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 15, 2023
First posted
Nov 18, 2023
StartActual
Jun 1, 2017
Primary completionActual
Dec 31, 2022
CompletionActual
Oct 13, 2023
Last update
Dec 13, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 13, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06139588
Responsible party
Sponsor
First posted
Nov 18, 2023
Start date
Jun 1, 2017
Primary completion
Dec 31, 2022
Completion
Oct 13, 2023
Last update
Dec 13, 2023

Study contacts

Andrea Vittorio Emanuele Lisa, MD
principal investigator · Istituto Europeo di Oncologia

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2023. You cannot join it, but the record below documents what was studied.

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